TWI251847B - Vacuum switchgear system and kit for system - Google Patents

Abstract

To provide a vacuum container accommodating plural switches assembled in accordance with the circuit specification. It has a PCT 10, and vacuum switchgear equipment 16, 18 are alternatively allocated on the power-distributor 12 on the power-receiving side; vacuum switchgear equipment 22, 18, 20 are alternatively allocated on the power-distributor 14 on the power distribution side. The vacuum containers 24, 30, 40, 42 of each vacuum switchgear equipment 16 to 22 accommodate the load break switch 44, an earth switch 46, and an vacuum circuit breaker 48 of various vacuum switches in accordance with the circuit specification. Each of the vacuum switches has connecting terminals 26. A cable head 28 protruded from the vacuum container 24 is connected to the lightning arrester 34 through the connection conductor 32. In each vacuum containers 24, 30, 40, 42, the designated cable head 28 connects the cable 38a to 38i. The cable head 28 and the external connection conductor 36 connect each vacuum container to make a circuit structure suitable for the customer's requirement.

Description

1251847 (1) IX. Description of the Invention [Technical Field] The present invention relates to a vacuum switchgear system, and more particularly to a plurality of vacuum switchgear devices having a plurality of shutters in a container and operating the shutters Vacuum switch device used as a power distribution device for a power system [Prior Art] In a power system, a switching device as an element is provided in a wiring system. Conventionally, such a switch device is connected to a plurality of devices such as a breaker and a circuit breaker, and is insulated in the air in the air, and is used as an insulating medium for miniaturization. Gas insulation of gases. However, if the insulating medium body has a bad influence on the environment, the near-media is proposed as a vacuum insulation type switching device by vacuum insulation using vacuum insulation, for example, there are a plurality of fixed devices. The electrode and the movable electrode face the switching portion, the movable electrode is connected to the bus-side conductor, and is fixed to the load-side electrode, and each of the main circuit closing portions shields each of the bus-side guiding systems by a flexible conductor (flexibility) Conductor) (refer to Patent Document 1). According to the vacuum insulation method, the vacuum switch device is denser than the gas insulation method, and the vacuum switch device can be densified. Regarding the suitability of the containment in the vacuum operator, the Pu system. The number of power distribution equipment is used in conductors or busbars. In this case, the use of S F 6 gas is used, and the insulation is covered by the main circuit electrode connector of the vacuum vessel, and the connected device is

1251847 (2) [Patent Document 1] Japanese Patent Laid-Open No. 2000-2 6 8 6 8 No. 5 Gong Xing g Pages 3 to 6, No. 1 to No. 3) [Summary of the Invention]

In the above-mentioned prior art, the main circuit switch sections are covered by the arc shield, and when the short circuit accident occurs, the tripping operation is performed; when the movable electrode is separated from the fixed electrode, even if the metal vapor is separated by each The electrodes are generated and become obstructed by the arc shield. However, when a vacuum switchgear is used to constitute a power-receiving-side switchboard or a power-side switchboard, a vacuum container in which various switches are accommodated in accordance with various circuit specifications has not been sufficiently considered. SUMMARY OF THE INVENTION An object of the present invention is to provide a vacuum container in which a plurality of shutters according to circuit specifications are accommodated in combination. [Means for solving the problem]

In order to solve the above problems, the present invention includes a plurality of vacuum containers that accommodate a plurality of switches and a plurality of internal conductors that connect the respective switches in accordance with respective circuit specifications, and each of the operating levers The shutter is connected to the operator, and the cable head is connected to the designated inner conductor so that one of the portions protrudes outside the vacuum container, and the power receiving side circuit or the power transmitting side circuit is formed according to the combination of the vacuum containers. According to the above-mentioned means, a plurality of switches are accommodated in each vacuum container according to the circuit specifications, and internal conductors of the respective switches are connected to each other, and the vacuum containers are combined in accordance with various circuit specifications (circuit structures), so that -6 - 1251847 can be constructed. (3) A system adapted to the needs. [Effect of the Invention] According to the present invention, it is possible to construct a system suitable for the needs. [Embodiment]

Hereinafter, an embodiment of the present invention will be described based on the drawings. 1 is an internal structure diagram of a power distribution facility of a vacuum switchgear system according to the present invention, and FIG. 2 is a circuit configuration diagram of a power distribution apparatus shown in FIG. 1, and FIG. 3 is a diagram shown in FIG. Front view of the power distribution equipment.

In the first to third figures, the power distribution equipment is provided with a PCT 10 position therebetween, and includes a power receiving side switchboard 12 and a power transmitting side switchboard 14. The power-receiving switchboard 12 is equipped with two types (A-type, C-type) of vacuum switchgears 1 and 8 according to the circuit specifications (circuit structure). The power distribution side switchboards are based on circuit specifications (circuits). The vacuum switchgear 1 8 , 20 , and 22 ° A vacuum switchgears of the type 3 (B, C, and D) are provided with: a power receiving side vacuum container 24, and a plurality of operators 26 A plurality of cable heads 28 are provided. The vacuum switchgear 18 of the C type includes a power receiving side vacuum container 30, a plurality of operators 26, and a plurality of cable heads 28. A-type vacuum switch The device I 6 and the C-type vacuum switchgear 18 are alternately arranged. Among the plurality of cable heads 28 of the vacuum switching devices 16 and 18, the specific cable heads 28 located at the left end of the vacuum switchgear device 6 are by Zhou-7-1251847 (4) The arrester is connected to the arrester 34 by a connecting conductor 32 protected by a fixed insulator, and among the other cable heads 28, the cable head 28 at the right end is connected to be fixed by the periphery. The outer connecting conductor 26 protected by the insulator is adjacent to the cable head 28 of the vacuum switching device 18.

Further, in the cable head 28 of the vacuum switchgear 16 , the cable head 28 disposed almost in the middle is surrounded by the cables 3 8 a, 3 8 b protected by the flexible insulation. Connected to the bus-side conductor, in the cable head 28 of the vacuum switchgear 18, the cable heads 28 in the middle are connected to each other by cables 38c protected by flexible insulation. Further, in the vacuum switchgear 18, the cable head 28 located on the right side of one of the vacuum switchgears 18 is connected to the coil of the PCT 10 by a cable 38d surrounded by a flexible insulator. Terminal. The cable head 28, which is located at the right end of the vacuum switchgear 18 connected to the PCT 10, is connected to the cable head 28 of the vacuum switchgear 22 by a cable 38e.

On the other hand, the B-type vacuum switchgear 20 of the power transmission side includes a power transmission side vacuum container 40, a plurality of operators 26, and a plurality of cable heads 28, and the D type vacuum switchgear 22 includes: The power transmitting side vacuum container 4, the plurality of operators 26, and the plurality of cable heads 28 are formed. The vacuum switchgear 8 of the C type on the power transmitting side has the same structure as the vacuum switchgear 18 of the power receiving side. In this case, the vacuum vessel 30 is configured as a power transmitting side vacuum vessel. In the cable head 28 of the vacuum switchgear 18, the cable head 28 disposed at the left end is connected to the cable head 28 of the adjacent vacuum switchgear 22 by an external connecting conductor 36, in a vacuum -8- 1251847 in the middle of the switchgear 1 8 (5)

The cable head 28 is connected to the coil terminal of the PC T 10 by the cable 38f, and the cable head 28 disposed at the right end is connected to the adjacent vacuum switch by the external connecting conductor 36. Cable head 28 of device 20. In the cable head 28 of the D-type vacuum switchgear 2 2, the cable head 28 disposed at the left end is connected to the cable 38 e, and the cable head 28 located at the middle is connected by the cable 3 8 g And the cable head 28 of the vacuum switchgear 20 connected to the right end. Further, the cable heads 28 disposed at the right end of each of the vacuum switchgears 20 are connected to the load side conductors by the respective cables 38h, 38i. The power receiving side vacuum containers 24, 30 of the vacuum switching devices 16, 18 and the power receiving side vacuum containers 30, 40, 42 of the vacuum switching devices 18, 20, 22 are in accordance with the specifications of the power receiving side circuit or the power transmitting side circuit, that is, the second circuit. The circuit specification of any one of the three circuits and the four circuits accommodates a plurality of switches and a plurality of internal conductors that connect the respective switches to each other.

Specifically, as shown in FIG. 4, in the vacuum container 24 of the vacuum switchgear 16, a load switch 44 as a plurality of shutters, a grounding switch 46, and a cover are accommodated in accordance with the circuit specification (circuit configuration). At the same time as the breakers 48, the internal conductors 50, 52, 54, 56, 58, 60, 62 of the respective switches are connected to each other in accordance with the circuit specifications (circuit configuration). Further, the load switch 44, the grounding switch 46, and the breaker 48 are connected to the operator 26 by an operating lever 26a that is disposed to reciprocate (up and down). The pair of load switches 44 are configured to include a movable electrode 44a and a fixed electrode 44b. Each movable electrode 44a is connected to the inner conductor 50 by a flexible conductor 64, one fixed electrode 44b is connected to the inner-9-1251847 (6) portion conductor 56, and the other fixed electrode 44b is connected to the inner conductor 60. . The inner conductor 60 is supported by the lower plate member 68 by an insulating support member 66.

The pair of grounding switch 46 includes a movable electrode 46a and a fixed electrode 46b. Each movable electrode 46a is connected to the inner conductor 52 by a flexible conductor 64, and the inner conductor 52 is connected to a ground terminal (not The figure shows). Further, among the fixed electrodes 46b, one of the fixed electrodes 46b is connected to the inner conductor 58, and the other fixed electrode 46b is connected to the inner conductor 60. The inner conductor 58 is supported by the lower plate member 68 by the support member 66, and is connected to the conductive rod 70, and the rod 70 is connected to the inner conductor 50. Further, the upper side of the rod 70 is coupled to the upper plate member 76 by an insulating support rod 72 and a rod 74.

The interrupter 48 is provided with a movable electrode 48a and a fixed electrode 48b. The movable electrode 48a is connected to the inner conductor 54 by a flexible conductor 64, and the inner conductor 54 is connected to the inner conductor 60 by a rod 78. The fixed electrode 48b is connected to the inner conductor 62. Further, the power receiving side vacuum container 24 is provided with a cable head 2 8 corresponding to one of the load switch 44, the rod 70, and the breaker 48, and each of the cable heads 28 is attached to one of the cables. The through hole 80 of the lower plate member 68 protrudes from the outside of the vacuum container 24, and is fixed to the lower plate member 68 in a state in which the vacuum container 24 is insulated. Each of the cable heads 28 includes a conductor 82 that is formed in a columnar shape by using copper, and a ceramic insulating bushing 84 that covers the periphery of the conductor 82, and is configured to have a thread formed at an end portion of the conductor 8 2 in the axial direction. In the portion 86, the threaded portion 86 of each of the cable heads -10 Ϊ 251847 (7) 28 is connected to the connecting conductor 32, the wires 3 8 a to 3 8 i, and the external connecting conductor as shown in Fig. 5 . 3 6 threaded parts. That is, the connection portions of the connection conductor 32 and the cables 38a to 38i and the cable head 28 of the external connection conductor 36 are formed into the same shape, respectively, and become the connection conductor 32, the extension wires 38 8 to 38 i, and the external connection conductors 36. Either of them can be connected to Rensi's line head.

As shown in Fig. 6, in the vacuum container 30 of the vacuum switchgear 18, three load switches 44 and a grounding switch 46 are accommodated, and a plurality of internal conductors 5, 9 are also housed. 2, 9 4. The movable electrodes 46a of the grounding switches 46 are connected to each other by the internal conductor 92, and the fixed electrode 46b is connected to the fixed electrode 44b of the adjacent load switch 44 by the internal conductor 58. The movable electrode 44a of each load switch 44 is connected to the inner conductor 94 by a flexible conductor 64, and the fixed electrode 4 4b is connected to the conductor 8 2 of the cable head 28.

As shown in Fig. 7, in the vacuum container 40 of the vacuum switchgear 20, one grounding shutter 46 and the breaker 48 are housed, and the inner conductors 56, 58 and 96 are also accommodated. , 9 8. The movable electrode 46a of the grounding switch 46 is connected to the ground terminal via the flexible conductor 64 and the inner conductor 96. The movable electrode 4 8 a of the interrupter 48 is connected to the conductor 8 2 of the cable head 28 by the flexible conductor 64, the inner conductor 98, and the rod 70. The fixed electrode 4 8 b is connected to the conductor 8 2 of the cable head 28, and is connected to the fixed electrode 46b of the grounding switch 46 by the inner conductor 58 as shown in Fig. 8, in the vacuum switchgear 2. 2 vacuum containers 4 2 -11 - 1251847 (8) Each of the other 58 can be connected to the 22-series 48, and the other can be used for the storage of the loader 44 and the grounding switch 46. There are internal conductors 56, 58, 96, 98. The movable electrode 4 4 a of the load switch 44 is connected to the inner conductor 98 by the flexible conductor 64. The inner conductor is connected to the conductor 8 2 of the cable head 28 by the rod 70. The fixed electrode 44b of each of the external load switches 44 is connected to the fixed electrode 46b of the grounding switch 46 by an internal conductor, and is also connected to the conductor 82 of the cable head 28. The movable poles 4 6 a of the grounding switch 46 are connected to the ground terminals via the flexible conductors 64 and the inner conductors 96, respectively. According to the present embodiment, the vacuum switches 24, 30, 40, and 42 of the vacuum switchgear, the vacuum containers 24, 30, 40, and 42 are housed in the load switch (4) and the grounding switch 4 in accordance with the circuit specifications (circuit generation). 6. The circuit breakers (internal conductors 50, 54, 56, 58'60, 62, etc.) are arbitrarily combined with each vacuum switchgear by a circuit specification (circuit configuration) to meet the needs of the customer. Further, the various types of shutters are housed in the vacuum containers 24, 30, and 40 4, and the vacuum switchgear can be miniaturized. Furthermore, the connection conductor 3 2 is connected to the cable 2 2, the cable 3 8 a to 3 8 i, and the external connection conductor 3 6 ' can be used without a conductive exposed portion or a charging exposed portion, thereby providing a vacuum switch with high safety. device. Further, the connecting portions of the connecting conductor 32 and the cables 38a to 38i and the cable connecting heads 28 of the external connecting conductors are respectively formed into the same shape, so that the connecting conductors 3 and the cables 3 8 a can be arranged in accordance with the circuit specifications. 3 8 i, external connection guide 3 6 is connected to any cable head 2 8 . -12-1251847 Ο In addition, according to the present embodiment, a container that can withstand high-pressure gas like a gas insulated unit is not required, and the vacuum container can be miniaturized. As a result, the vacuum switchgear can be miniaturized, which can help Miniaturization of the system as a whole. [Simple description of the map]

Fig. 1 is an internal structural view of a power-receiving device using the vacuum switchgear system of the present invention, (a) showing a front side internal structure view, and (b) a side surface side internal structure view. Fig. 2 is a circuit configuration diagram of the power distribution equipment shown in Fig. 1. Figure 3 is a front elevational view of the power distribution equipment shown in Figure 1. Figure 4 (a) is a front cross-sectional view of the vacuum switchgear of the form A, and (b) is a side cross-sectional view of the same. Figure 5 is a front cross-sectional view showing the relationship between the cable head, the connecting conductor, and the cable. Figure 6 (a) is a front cross-sectional view of the vacuum switchgear.

(b) is the same side profile view. Figure 7(a) is a front cross-sectional view of the vacuum switchgear in the form of a B, and (b) is a side cross-sectional view of the same. Figure 8(a) is a front cross-sectional view of the D-type vacuum switchgear, and (b) is a side cross-sectional view of the same. [Symbol description of main components] 10 : Transformer 1 2 : Power distribution side switchboard-13- 1251847 (10) 1 4 : Power transmission side switchboard 1 6 , 1 8 , 2 0 , 2 2 · Vacuum switchgear 24 , 30 , 40 , 42 : Vacuum vessel 2 6 : Operator 26a : Operating lever · 2 8 : Cable head 3 2 : Connecting conductor

3 6 : External connection conductors 38a to 38i: Extension line 44 : Load switch 46 : Grounding switch 50, 52, 56, 58, 60, 62: Internal conductor 64 : Flexible conductor

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Claims (1)

1251847 (1) X. Patent application scope 1 · A vacuum switchgear system, characterized by: A vacuum switchgear having a plurality of vacuum receptacles for accommodating a plurality of internal conductors and a plurality of internal conductors interconnecting the respective openers according to various circuit specifications, and disposed outside the vacuum container a plurality of operators connected to the plurality of shutters with the respective operating levers, and one of the inner conductors connected to the vacuum container in the insulated state, and a portion protruding from the vacuum container The plurality of cable heads are external; according to the combination of the plurality of vacuum switch devices, the power receiving side circuit or the power transmitting side circuit is formed. 2. A vacuum switchgear system characterized by: A vacuum switchgear having a plurality of vacuum receptacles for accommodating a plurality of internal conductors and a plurality of internal conductors interconnecting the respective openers according to various circuit specifications, and disposed outside the vacuum container a plurality of operators connected to the plurality of shutters with the respective operating levers, and one of the inner conductors connected to the vacuum container in the insulated state, and a portion protruding from the vacuum container A plurality of cable heads are externally connected to each of the cable heads, and a cable or an external connecting conductor surrounded by the insulator is detachably connected. 3 · A vacuum switchgear system, characterized by: a plurality of vacuum switchgears, the vacuum switchgear having: a plurality of shutters connected to each other according to circuit specifications of various power receiving sides and interconnected -15-1251847 (2 ) a power-side vacuum container that connects the plurality of internal conductors of the respective switches, and a power-side vacuum container that houses a plurality of switches and a plurality of internal conductors that connect the respective switches according to circuit specifications of the power transmission sides, and a plurality of operators disposed outside the vacuum containers and connected to the plurality of shutters by respective operating levers, and each of the vacuum containers being insulated from each other and connected to each of the vacuum containers An inner conductor, a plurality of cable heads protruding from the vacuum containers; and each of the cable heads detachably connected to a cable or a surrounding solid protected by the flexible insulation External connection conductor protected by insulation. 4 · The vacuum switchgear system as described in item 1 of the patent application, wherein: The specific cable head connecting portion of the plurality of cable heads is connected to the lightning arrester by a connecting conductor for the arrester surrounded by the solid insulator; and the other cable head connecting portion is detachably connected to the surrounding portion A cable protected by a flexible insulator or an external connecting conductor surrounded by a solid insulation. 5. The vacuum switchgear system of claim 1, wherein: a specific cable head connection portion of the plurality of cable heads, a connection conductor for a lightning arrester surrounded by a solid insulator, Connect the arrester; at the other cable head connection, detachably connect the cable protected by the flexible insulation around or the outer-16-1251847 (3) connecting conductor surrounded by the solid insulation The connection conductor for the arrester and the cable, and the connecting portion of the lightning conductor connecting conductor and the cable connecting head of the external connecting conductor are formed in the same shape. 6 · The vacuum switchgear system as described in item 1 of the patent application, wherein: The plurality of cable head connecting portions are detachably connected to a cable protected by the flexible insulator or an external connecting conductor surrounded by the solid insulator; the plurality of cable head connecting portions The specific cable head connecting portion is connected to the cable head connecting portion of another adjacent vacuum container by the external connecting conductor. 7. The vacuum switchgear system as recited in claim 1 wherein: The plurality of cable head connecting portions are detachably connected to a cable protected by the flexible insulator or an external connecting conductor surrounded by the solid insulator; the plurality of cable head connecting portions The specific cable head connecting portion is connected to the cable head connecting portion of another vacuum vane connected by the external connecting conductor; the cable is connected to other vacuum container cables. One of the wire connection portion or the coil terminal of the transformer. 8. The vacuum switchgear system as recited in claim 4, wherein: a specific cable head connection portion of the plurality of cable head connection portions is connected by a lightning arrester surrounded by solid insulation Conductor, connection arrester; detachable connection to other cable head connections. -17-12511847 (4) Cable protected by flexible insulation or externally protected by solid insulation a connecting conductor; a specific cable head connecting portion of the plurality of cable head connecting portions is connected to a cable connecting portion of another adjacent vacuum container by the external connecting conductor. 9 · The vacuum switchgear system as described in item 1 of the patent application, wherein: The specific cable head connecting portion of the plurality of cable head connecting portions is detachably attached to the other than the cable connecting portion by the connecting conductor for the arrester protected by the solid insulator and connected to the other lightning head connector Connecting a cable surrounded by a flexible insulator or an external connecting conductor protected by a solid insulator; a specific cable head connection portion of the plurality of cable head connecting portions is connected by the external connection The conductor is connected to a cable head connecting portion of another adjacent vacuum container; the cable is connected to one of a cable head connecting portion of another vacuum container or a coil terminal of a transformer. 10. The vacuum switchgear system as recited in claim 1, wherein: the vacuum container of each of the vacuum switch devices is based on a circuit specification of any one of a second circuit, a third circuit, or a fourth circuit, and accommodates the foregoing plurality A fi-closer with the aforementioned plurality of inner conductors. -18-